*{
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
    color: #000;
}
ul{
    list-style: none;
}
body{
    background: #F3F4F7;
    overflow-x: hidden;
}
.top{
    width: 90%;
    height: 75px;
    background:#fff;
    margin: 20px auto;
    border-radius: 8px;
    overflow: hidden;
}
.logo_content{
    height: 50px;
    margin-top: 12.5px;
    margin-left: 32px;
    position: relative;
}
.logo{
    width: 97px;
    height: 38px;
    position: absolute;
    top: 6px;
}
.logo img{
    width: 100%;
    height: 100%;
}
.top_item{
    position: absolute;
    top: 0;
    left: 120px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.top_item a{
    margin-left: 24px;
    font-size: 14px;
    font-weight: bold;
}
.top_item a:nth-child(1){
    width: 50px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    background: #EFE8FF;
    color: #9C71FC;
    border-radius: 6px;
    margin-left: 0;
}
/* 教学管理 */
.Administration{
    width: 90%;
    height: 560px;
    margin: 0 auto;
    position: relative;
}
.sidebar{
    width: 260px;
    height: 100%;
    background: #FFFFFF;
    border-radius: 8px;
    padding: 20px;
    box-sizing: border-box;
}
.sidebar ul li{
    width: 220px;
    box-sizing: border-box;
    position: relative;
    padding:15px 0;
}
.sidebar ul li::before{
    content: ">";
    display:block;
    position: absolute;
    right: 5px;
}
.sidebar ul li:nth-child(1){
    height: 40px;
    line-height: 40px;
    padding: 0;
    background: #F77080;
    color: #fff;
}
.sidebar ul li:nth-child(1) a{
    color: #fff;
}
.sidebar ul li a img{
    vertical-align:middle;
    margin-bottom:6px;
    padding-right:12px;
    padding-left:18px;
}
/* 最新学员 */
.student{
    width:calc(100% - 280px);
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
}
.student_content{
    width:24%;
    padding:20px 0 ;
    background: #fff;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.student_item{
    flex-grow: 1;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.student_new{
    height: 100px;
}
.student_new p{
    padding-left: 15px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.student_new p:nth-child(1){
    font-size: 20px;
    color: #5B5B80;
    margin-bottom: 20px;
}
.student_new p:nth-child(2){
    color: #C5C5C5;
    margin-bottom: 10px;
}
.student_new p:nth-child(3){
    color: #9C71FC;
}
.student_item:nth-child(2){
    font-size: 32px;
    text-align: center;
}
/* 最新学院报名 */
.signup{
    width:calc(100% - 280px);
    position: absolute;
    right: 0;
    top:155px;
    display: flex;
}
.signup_left{
    width: 70%;
    padding:0 20px 30px  20px;
    box-sizing: border-box;
    background: #fff;
    border-radius: 8px;
}
.signup_customer{
    display: flex;
    flex-direction: column;
}
.signup_customer .customer_1{
    flex-grow: 1;
    display: flex;
    align-items: center;
    padding:8px 0 ;
    color: #5B5B5B;
    border-bottom: 1px solid #B9B9B9;
}
.customer_item img{
    width: 40px;
    height: 40px;
    vertical-align: middle;
}
.signup_customer .customer_1:nth-child(1){
    padding-top:10px;
    font-size: 20px;
    border-bottom: 0;
}
.signup_customer .customer_1 .customer_item{
    /* width: 100px; */
    width: 35%;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.signup_customer .customer_1 .product{
    width:65%;
}
/* 热门课程 */
.signup_right{
    width: 30%;
}
.hot_curriculum{
    width: 95%;
    height: 100%;
    margin-left:5%;
    background: #fff;
    border-radius: 8px;
    padding-left: 15px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}
.hot_curriculum .hot_item{
    display: flex;
    margin-bottom:18px;
    color: #5B5B80;
    overflow: hidden;
}
.hot_curriculum .hot_item:nth-child(1){
    font-size: 20px;
    padding: 10px 0;
}
.hot_technology{
    display: flex;
    align-items: center;
}
.hot_technology img{
    width: 50px;
    height: 50px;
}
.hot_technology p{
    font-size: 14px;
    margin-left:7px;
    white-space: nowrap;
}
/* 站长公告 */
.notice{
    width: 90%;
    margin: 20px auto;
    display: flex;
    justify-content: space-between;
}
.notice_item{
    width: 32.5%;
    background: #fff;
    border-radius: 8px;
    padding: 0 35px 20px 35px;
    box-sizing: border-box;
}
.notice_title{
    padding:20px 0;
    color: #5B5B80;
    font-size: 20px;
}
.notice_img{
    width: 100%;
}
.notice_img img{
    width: 100%;
}
.notice_txt{
    width: 100%;
    font-size: 13px;
    color: #5B5B5B;
    padding: 20px 0;
}
.analysis{
    width: 100%;
}
.analysis img{
    width: 100%;
}